With its sections separated by barbed-wire fences, Auschwitz II had the largest prisoner population of any of the three main camps. In January 1942, the first chamber using lethal Zyklon B gas was built on the camp. This building was judged inadequate for killing on the scale the Nazis wanted, and four further chambers were built. These were used for systematic genocide right up until November 1944, two months before the camp was liberated.

Though most Nazi concentration and extermination camps were destroyed after the war, some of them were turned into permanent memorials, and museums. In Communist Poland, some camps such as Majdanek, Jaworzno, Potulice and Zgoda were used by the Soviet NKVD to hold German prisoners of war, suspected or confirmed Nazis and Nazi collaborators, anti-Communists and other political prisoners, as well as civilian members of the German-speaking, Silesian and Ukrainian ethnic minorities. Currently, there are memorials to the victims of both Nazi and communist camps at Potulice; they have helped to enable a German-Polish discussion on historical perceptions of World War II.[55] In East Germany, the concentration camps at Buchenwald and Sachsenhausen were used for similar purposes. Dachau concentration camp was used as a detention centre for the arrested Nazis.[56]
That same day, Gestapo official SS Sergeant Karl Silberbauer and two Dutch police collaborators arrested the Franks; the Gestapo sent them to Westerbork transit camp on August 8. One month later, on September 4, 1944, SS and police authorities placed the Franks and the four others hiding with them on a train transport to Auschwitz-Birkenau in German-occupied Poland.
Several protective zones surround components of the World Heritage property and function de facto as buffer zones. They are covered by local spatial development plans, which are consulted by the Regional Monuments Inspector. The management of the property’s setting is the responsibility of the local government of the Town and Commune of Oświęcim. For better management and protection of the attributes of the Outstanding Universal Value of the property, especially for the proper protection of its setting, a relevant management plan must be put into force.
In Mein Kampf, Hitler stated that Lebensraum would be acquired in Eastern Europe, especially Russia.[132] In his early years as the Nazi leader, Hitler had claimed that he would be willing to accept friendly relations with Russia on the tactical condition that Russia agree to return to the borders established by the German–Russian peace agreement of the Treaty of Brest-Litovsk signed by Vladimir Lenin of the Russian Soviet Federated Socialist Republic in 1918 which gave large territories held by Russia to German control in exchange for peace.[131] In 1921, Hitler had commended the Treaty of Brest-Litovsk as opening the possibility for restoration of relations between Germany and Russia by saying:
The first 'bunker', with two sealed rooms, operated from January 1942 to the end of that year. The second, with four air tight rooms, became redundant in the spring of 1943, but remained standing and was used again in the autumn of 1944 when extra 'capacity' was needed for the murder of Hungarian Jews and the liquidation of the ghettos. The second measured about 1.134 square feet. The victims murdered in the 'bunkers' were first obliged to undress in temporary wooden barracks erected nearby. Their bodies were taken out of the gas chambers and pushed to pits where they were burned in the open. Between January 1942 and March 1943, 175,000 Jews were gassed to death here, of whom 105,000 were killed from January to March 1943.

The history of Nazism after 1934 can be divided into two periods of about equal length. Between 1934 and 1939 the party established full control of all phases of life in Germany. With many Germans weary of party conflicts, economic and political instability, and the disorderly freedom that characterized the last years of the Weimar Republic (1919–33), Hitler and his movement gained the support and even the enthusiasm of a majority of the German population. In particular, the public welcomed the strong, decisive, and apparently effective government provided by the Nazis. Germany’s endless ranks of unemployed rapidly dwindled as the jobless were put to work in extensive public-works projects and in rapidly multiplying armaments factories. Germans were swept up in this orderly, intensely purposeful mass movement bent on restoring their country to its dignity, pride, and grandeur, as well as to dominance on the European stage. Economic recovery from the effects of the Great Depression and the forceful assertion of German nationalism were key factors in Nazism’s appeal to the German population. Further, Hitler’s continuous string of diplomatic successes and foreign conquests from 1934 through the early years of World War II secured the unqualified support of most Germans, including many who had previously opposed him.

There is no more forceful advocate for the preservation of Auschwitz than Wladyslaw Bartoszewski. Born in Warsaw in 1922, Bartoszewski, 87, was a Red Cross stretcher-bearer when the German Army invaded the capital city in September 1939. Plucked off the street by German soldiers a year later, he was sent to Auschwitz. He’d been there seven months when the Red Cross arranged for his release in April 1941—one of the few inmates ever set free.
^ This was the result of either a club foot or osteomyelitis. Goebbels is commonly said to have had club foot (talipes equinovarus), a congenital condition. William L. Shirer, who worked in Berlin as a journalist in the 1930s and was acquainted with Goebbels, wrote in The Rise and Fall of the Third Reich (1960) that the deformity was caused by a childhood attack of osteomyelitis and a failed operation to correct it.
In 1933, after Adolf Hitler's Nazi Party won the federal election, Edith Frank and the children went to stay with Edith's mother Rosa in Aachen. Otto Frank remained in Frankfurt, but after receiving an offer to start a company in Amsterdam, he moved there to organize the business and to arrange accommodations for his family.[9] He began working at the Opekta Works, a company that sold the fruit extract pectin, and found an apartment on the Merwedeplein (Merwede Square) in the Rivierenbuurt neighbourhood of Amsterdam. By February 1934, Edith and the children had joined him in Amsterdam. The Franks were among 300,000 Jews who fled Germany between 1933 and 1939.[10]
It was three o'clock in the afternoon when we arrived; nine hours later, without food or drink, we were brought to the so-called reception barrack. At its door stood an S. S. man who tried to hasten the entrance of each novice by a kick in the seat. Inside, inmates used as office help were sitting at long rows of typewriters, and they took down our personal data with stiff military posture—a difficult job for those who hadn't served in the army. To them we had to give account. Then we had to hand over all our valuables: rings, watches, chains, tie pins, and our wallets and purses with contents. They were exactly registered and kept in paper bags signed by us. (In contrast to reliable reports from other camps, we were given back our money to the last cent and all valuables on the day of our release.)

Between 1942 and 1944, the SS authorities at Auschwitz established 44 subcamps. Some of them were established within the officially designated “development” zone, including Budy, Rajsko, Tschechowitz, Harmense, and Babitz. Others, such as Blechhammer, Gleiwitz, Althammer, Fürstengrube, Laurahuette, and Eintrachthuette were located in Upper Silesia north and west of the Vistula River. Some subcamps, such as Freudenthal and Bruenn (Brno), were located in Moravia.

Within this framework, "racially inferior" peoples, such as Jews and Gypsies, would be eliminated from the region. Nazi foreign policy aimed from the beginning to wage a war of annihilation against the Soviet Union, and the peacetime years of the Nazi regime were spent preparing the German people for war. In the context of this ideological war, the Nazis planned and implemented the Holocaust, the mass murder of the Jews, who were considered the primary "racial" enemy.
The concentration camps increasingly became sites where the SS authorities could kill targeted groups of real or perceived enemies of Nazi Germany. They also came to serve as holding centers for a rapidly growing pool of forced laborers used for SS construction projects, SS-commissioned extractive industrial sites, and, by 1942, the production of armaments, weapons, and related goods for the German war effort.
Most of the judicial system and legal codes of the Weimar Republic remained in place to deal with non-political crimes.[206] The courts issued and carried out far more death sentences than before the Nazis took power.[206] People who were convicted of three or more offences—even petty ones—could be deemed habitual offenders and jailed indefinitely.[207] People such as prostitutes and pickpockets were judged to be inherently criminal and a threat to the community. Thousands were arrested and confined indefinitely without trial.[208]
In Autumn 1943, the camp administration was reorganized following a corruption scandal. By the end of 1943, the prisoner population of Auschwitz main camp, Birkenau, Monowitz and other subcamps was over 80,000: 18,437 in the main camp, 49,114 in Birkenau, and 13,288 at Monowitz where I G Farben had its synthetic rubber plant. Up to 50,000 prisoners were scattered around 51 subcamps such as Rajsko, an experimental agricultural station, and Gleiwitz, a coal mine (see The List of the Camps for a complete list of those subcamps).

Similar to the Trump administration’s apparent hope that the breakup of families would deter unwanted migration, the British sought to deter Boer fighters. British parliamentarians critical of the policy labelled these “concentration camps,” alluding to the Spanish policy of the “reconcentration” of civilians during the Spanish-American War (1898).

The resistance sent out the first oral message about Auschwitz with Dr. Aleksander Wielkopolski, a Polish engineer who was released in October 1940.[202] The following month the Polish underground in Warsaw prepared a report on the basis of that information, The camp in Auschwitz, part of which was published in London in May 1941 in a booklet, The German Occupation of Poland, by the Polish Ministry of Foreign Affairs. The report said of the Jews in the camp that "scarcely any of them came out alive". According to Fleming, the booklet was "widely circulated amongst British officials". The Polish Fortnightly Review based a story on it, writing that "three crematorium furnaces were insufficient to cope with the bodies being cremated", as did The Scotsman on 8 January 1942, the only British news organization to do so.[203]
Sunday was not a work day, but prisoners were required to clean the barracks and take their weekly shower,[115] and were allowed to write (in German) to their families, although the SS censored the outgoing mail. Inmates who did not speak German would trade some of their bread for help composing their letters.[116] Observant Jews tried to keep track of the Hebrew calendar and Jewish holidays, including Shabbat, and the weekly Torah portion. No watches, calendars, or clocks were permitted in the camp. Jewish calendars were rare among prisoners; being in possession of one was dangerous. Only two Jewish calendars made in Auschwitz survived to the end of the war. Prisoners kept track of the days in other ways, such as obtaining information from newcomers.[117]
Disfigured by a brutal beating, Frank rarely granted interviews; her later work, "The Return," describes how her father did not recognize her upon their reunion in 1945. "The House Behind" was searing and accusatory: The family’s initial hiding place, mundane and literal in the first section, is revealed in the second part to be a metaphor for European civilization, whose facade of high culture concealed a demonic evil. “Every flat, every house, every office building in every city,” she wrote, “they all have a House Behind.” The book drew respectful reviews, but sold few copies.
Museum curators consider visitors who pick up items from the ground to be thieves, and local police will charge them as such. The maximum penalty is a prison sentence of ten years.[301] In June 2015, two British youths from the Perse School were convicted of theft after picking up buttons and shards of decorative glass from the ground near the area where camp victims' personal effects were stored. Curators said that similar incidents happen once or twice a year.[302] The 16-ft Arbeit Macht Frei sign over the main camp's gate was stolen in December 2009 by a Swedish former neo-Nazi and two Polish men. The sign was later recovered.[303]

Around one in six Jews killed in the Holocaust died in Auschwitz.[196] By nation, the greatest number of Auschwitz's Jewish victims originated from Hungary, accounting for 430,000 deaths, followed by Poland (300,000), France (69,000), Netherlands (60,000), Greece (55,000), Protectorate of Bohemia and Moravia (46,000), other camps (34,000), Slovakia (27,000), Belgium (25,000), Germany and Austria (23,000), Yugoslavia (10,000), Italy (7,500), and Norway (690).[6] Fewer than one percent of Soviet Jews murdered in the Holocaust were killed in Auschwitz; German forces had already been driven from Russia when the killing at Auschwitz reached its peak in 1944.[197] Of the 400 Jehovah's Witnesses who were imprisoned at Auschwitz, 132 died there.[198]
None of the categories are independent - one could classify many camps as a mixture of several of the above. All camps had some of the elements of an extermination camp, but systematic extermination of new arrivals by gas chambers only occurred in specialized camps. These were extermination camps, where all new-arrivals were simply killed—the "Aktion Reinhard" camps (Treblinka, Sobibór and Belzec), together with Chelmno. Two others ( Auschwitz and Majdanek) operated as combined concentration- and extermination-camps. Others like Maly Trostenets were at times classified[by whom?] as "minor extermination camps".[50]